arcely necessary to say that an ample supply of fresh food
must be always supplied, but it may not be amiss to say that it is
well, when supplying fresh branches, to remove the worms from the old
to the new. The best way of doing this is to clip off the branch, or
leaf, on which the worm is resting, and tie, pin, or in some way affix
the same to the new branches. If this be not done, they will continue
to eat the old leaf, even if it be withered, and this induces disease.
If the worm has fastened itself for the purpose of moulting, the best
way is to remove the entire branch, clipping off all the dried
leaves before so removing it. These remarks apply, in general, to the
treatment of all silkworms, except _Bombyx mori_.

The results of numerous experiments with _Yamamai_ go to show that it
is, as I said before, a difficult worm to rear; but it has been reared
near New York to the extent of eight hundred cocoons out of sixteen
hundred eggs, and this, although not a remunerative result, is
encouraging.

The Chinese silk moth, _Aulterea Pernyi_, also an oak feeder, has been
successfully raised by me and by others, for several years. Eggs have
been sold to persons in States widely separated, and the results show
that this worm is perfectly hardy.

The moth winters in the cocoon, emerges early in May, if the weather
be warm, pairs readily, and lays from 150 to 200 eggs. These hatch
out in about fourteen days, and like _Yamamai_, always about 5 or 6
o'clock in the morning. It is necessary to be on the alert to catch
them on hatching only, and to remember that they are vagabonds, even
to a greater extent than _Yamamai_. Consequently similar precautions
must be taken.

The worm on emerging from the egg is large, and of a chocolate-brown
color. After the first month it becomes of a yellowish green; head,
pale brown; feet and prolegs of nearly the same color. The body has
numerous reddish tubercles, from which issue a few reddish hairs. At
the base of some of the tubercles on the anterior segments are silvery
patches.

The _Pernyi_ worm is much more easily reared than that of _Yamamai_,
but still great care is needed; fresh food of course is essential, and
a slight sprinkling of the branches and worms in very warm weather is
advisable; although it is not so necessary as with _Yamamai_. It is
remarkable that _Pernyi_ worms, fed in the open air, on oak trees,
do not, at present, thrive so well as those fed in-doors, but this,